"I shall go back on foot, " said he, "over the whole route which we have taken, to see if I can't find it.

最后罗瓦赛尔重新穿好了衣服，他说：“我先把我们刚才步行的那一段路再往走一遍，看看是不是能够找着。”

youdao

It takes half an hour to go on foot from my home to my school and back.

从我家到学校来回要走半小时。

《新英汉大辞典》

I, go, back, home, on foot, yesterday.

昨天我步行回家的。

youdao

and Mexican officials. Every day, thousands of people on foot and in vehicles go back and forth across the border here, and millions of dollars worth of products cross the line in trucks and railroad cars.

VOA: standard.2009.04.30